Means for insulating lamp-sockets and the like.



M. MATSON.

i'wiiANS FOR lNSULATING LAMP SOCKETS AND THE LIKE.

APPLICATION HLED JAN.28, 1914. J

Patented Jan. 11, 1916 mama a rnrrr rin IVIARTIN MATSON. OF MILVJAUKEE. WISCONSIN, ASSIGNOR TO THE CUTLEBr-XIATKIJEER MFG. (10., OF MILVIAUKEE. KVISCONSIN, A. CORPORATION OF "WISCONSIN.

MEANS FOR INSULATING-LAMP-SOCKETS AND THE LIKE.

1 ,l 6&258.

Application filed January 28,

following is a full, clear, concise, and exact description, reference being had to the accompanying drawing, forming a part of this specification.

This invention relates to electric lainp sockets, pendent switches, and the like,-and more particularly to such devices wherein the insulating lining for the casing cap is carriedby the socket base housed in the casing disclosed in the co-pending application of Charlesol. Klein, tiled lllarch l'i' 1913, Serial No. 754,807.

()ne of the objects of theinvention to provide simplified and improved means for attaching a casing cap lining to an insulating base housed in the casin A further object is to provide an ellicient snap locking means for releasably securing a resilient insulating member to a rigid insulating xnemher.

Other objects and advantages'will appear hereinafter. v

In order b0 more clearly disclose my invention I have illustrated a preferred cinhodiment thereof in the accompanying drawing. It is to be understood, however, that the form shown issus'cepti'ole of modification and that the invention is capable of other embodiments.

In the drawing, Figure 1 is an elevational view or a lamp socket, partially in section; Fig. 2 is a side view of the conductor-carr ing base provided with an insulating lining for the casing cap. Fig. 3 is a top View of the socket base; and t a perspective view of the casing cap linin Referring more specifically to the drawing. a conventional casing comprising a metiillic shell 1 and cap 2 is arranged to house and support an insulating base 3 which car ries the current conducting parts of the socket device. Suitable means is provided for locking the parts'o't the casing together. An insulating lining 4 for the casing cap is mounted upon and carried by the socket base In the form shown the insulating base is transversely divided into a lower section 5 Specification of Letters Patent,

, Patented 52m. 11, Hill 1914. Serial No, 815,043

and an upper section .3, having secured be* tween the same a snap switch mechanism provided with a push-button operating member 7. A screw shell. 8 is secured to the lower face of the base section 5 and pair of terminal binding posts 9, for connection to line wires, are provided on opposite sides of the insulating base and preferably arranged on the section 5 at right angles to the ushbutton 7. Vertically extending conductor grooves 10 are provided in the sides of the upper section 6 in alinement with the binding posts 9. An annular flange 11 extends around the upper margin of the base 6 and is provided with oppositely (lisposed cut-away recesses 12 coinciding with the grooves 10.

The sing cap 2 carries-a bushing 13 through .vhich the line. Wires enter the casattachment to the binding posts 9.

ing for Such wires divide above the base 6 and,

snugly fit in the grooves 10 so-that the hated ends may be readily lastenedto the socket terminals. 7

above mentioned, the insulating lining l which protects the cap 2 from accidental contact with the conductors, is carried by the rigid insulating base 6. ThQlllBtlIlS of attachment shown between these parts comprises a pair of depending cars It on the fibrous lining which are adapted to snap into engagement with the lower surface on the flange 11 of the hose. As shown, the ears or lugs Ll are substantially of tie shape of an inverted T having connecting shank 15 and crosshead 16.

in wiring and assembling the device, the line wires may he threaded through the bushing 13, then through an aperture 1? in the insulating lining land finally secured to the binding posts 9. The lining l is then snapped upon the base 6, as shown, the shank 15 of the lugs l-i fitting in the base recess 12 and the cross-head 16 engaging the sections '19 may be provided shell 8 are preferably secured together by vertically extending screws 18 accessible from the top of the base. The heads of these screws may be suitably sealed 'with insulating, wax, if desired, and barrier walls on the base toadditionally safe-guard against accidental contact between the line wires and the screws.

The shell 1 is lined with a tube 20 of in sulating material, and, in the preferred form the margin 21 of the shell ining fits over i the lugs let of the cap lining when the socket is assembled. The cap lining is then positively secured against accidental separation from the base and furthermore, in the case of pendent sockets, the cap lining may thus be employed as a strain relief for the line conductors by knotting the latter within the lining.

What I claim as new by Letters Patent is:

1. The combination with a lamp socket or similar casing including a cap, of a device provided with terminals for connection with line wires, and an insulating member carried by said device to insulate the line wires from said.easing cap, one of said parts having a shoulder and the other having a resilient portion receiving said shoulder to seeure the sametogether.

The combination with a metallic casing comprising a cap and shell having means for locking the same together, of an insulating base'inclosed and supported within said casing, and an insulating linin of tiberlike material for said cap mounted on said base, said parts having snap engaging means, independent of said first-mentioned means, for securing said lining to said base.

3. In a lamp socket or similar device, in combination, an insulating base having a peripheral transverse flange, said flange and desire to secure having a vertical recess therein, and an insulating member of fibrous material having a marginal ear with a cross head and connectin portion, the head of said ear engaging a transverse face of said base flange and the connecting portion of said ear fitting in said flange recess to holdvsaid member and said base in fixed relation.

4. In a lamp socket or similar device, in combination, an insulating base having a terminal binding post accessible from the side of said base for connection to a line Wire and having a recess above said binding post for receiving said wire, and an insulating lining having a marginal portion overlyingsaid base recess for holding said Wire therein.

5. In a lamp socket or similar combination, an insulating binding post for connection to a line wire and a groove thereabove for receiving said wire, and an insulating cover having a resilient marginal portion engaging said base for securing the same together and overlying said groove for holding said wire therein.

6. Ina lamp socket or similar device, the combination with a casing comprising a cap and shell, of a base therein for the currentcarrying parts, an insulating member for said casing eap having attaching portions for engaging said base, and an insulating member for said casing shell fitting over said attaching portions of insulating member for holding the same in engagement with said base. 4

In witness whereof, I have hereunto subscribed my name in the presence of two wit nesses.

MARTIN MATSON. Witnesses L. A. WATSON, TEILLA BEST.

device, in base having a said first-mentioned 

